I have the HQ Sweet 16 (sit down) and love it. I am a newbie on this machine but the machine itself is nearly 5 years old so I don't want to comment too much on features. I have the stitch regulator but decided not to use it. It took me awhile to get used to having to set the tension. My basic bernina activa 220 would FMQ nearly anything without changing tension. I found Jamie Wallen's Youtube useful. If you are going to do ruler work on it, be aware that the needleplate sits quite proud and rulers "catch". Too work around this, I have taped largish sheet of template plastic around it to smooth out the area. The plastic sits under the table overlay. My only complaint is that there is no clear "window" in the table so I have to sit on the floor to clean out the bobbin area and keep it oiled and changing the bobbin is by feel. HettyB